I do not have preferences, but I can suggest some popular Linux software that can be used for SSH connections to GL routers:

OpenSSH: OpenSSH is a widely used and well-documented open-source software suite that provides secure network communication via the SSH protocol. OpenSSH is included with most Linux distributions and can be used to connect to GL routers over SSH.

PuTTY: PuTTY is a free and open-source terminal emulator, serial console, and network file transfer application that supports SSH and other protocols. It is available for Windows and Linux and can be used to connect to GL routers over SSH.

Termius: Termius is a popular cross-platform SSH client that supports SSH, Mosh, and Telnet protocols. It provides a modern terminal emulator with advanced features such as multi-tabs, search, and terminal sessions syncing.

SecureCRT: SecureCRT is a commercial SSH client that provides advanced terminal emulation capabilities, including support for multiple sessions, tabs, and custom keymaps. It is available for Windows, macOS, and Linux and can be used to connect to GL routers over SSH.

MobaXterm: MobaXterm is a comprehensive terminal emulator for Windows that provides support for SSH, Telnet, RDP, VNC, X11, and more. It includes advanced features such as multi-tabs, a file browser, and an embedded X server.